Hi Ed
Disagree on a few points there.
But best tubing I have found is air con tubing or if you can get 2 inch heliax coax..but if air con Not china made!
Ali at best has twice R of copper. More losses.
And getting pure ali tubing/foil is nigh on impossible. Plus foil is in my opinion a no no.( especially if on low bands)
Also have to be careful with copper..ie don¡¯t use copper water pipe as that is very impure..( why its cheap.)
Plus of course no joins in tubing except at vac cap ( if join¡¯s needed then silver brazed.)
Thats of course if you after a GOOD performance mag loop and not a portable one..
Simon g0zen
